This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 噄 is uncertain. It visually combines 口 (mouth) with 絜, but the original role of these components is unclear.
With 口 (mouth) beside 絜, you might imagine a mouth trying to speak clearly or cleanly, but the true meaning is unknown.
For キツ, imagine a kitsune (きつね, fox) with its mouth open, making a sharp kits sound: kits -> キツ.
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